Find out from your grandparents or other elders -
How did they go to school ?

Find out from your grandparents or other elders - How did they get water for their daily needs when they were young ?

Find out from your grandparents or other elders - What means of entertainment did they use ?

Write the negation of the followings: (ix) He did not go to school yesterday

Find out the mass of _8^16^O and compare the result with the mass found from mass spectroscopy experiments.

Cut a transverse section of young stem of a plant from your school garden and observe it under the microscope. How would you ascertain whether it is a monocot stem or dicot stem? Give reasons.

A substance absorbs heat Q_1 , in going from one state to another and releases Q_2 in coming from the second state to the first state. How much work is done by the substance and what is the change in* the internal energy of the substance.?

In a primary school parents asked about of the number of hours they spend per day in helping their children to do home work. There were 90 parents who helped for frac(1)(2) hour to 1frac(1)(2) hours. The distribution of parents according to the time for which, they said they helped is given in the adjoining figure, 20% helped for the than 1frac(1)(2) hours per day, 30% helped for frac(1)(2) hour to 1 hours, 50% did not help at all. Using this, answer the following : How many said that they helped more than 1frac(1)(2) hours?

In a primary school parents were asked about of the number of hours they spend per day in helping their children to do home work. There were 90 parents who helped for frac(1)(2) hour to 1frac(1)(2) hours. The distribution of parents according to the time for which, they said they helped is given in the adjoining figure, 20% helped for more than 1frac(1)(2) hours per day, 30% helped for frac(1)(2) hour to 1 hours, 50% did not help at all. Using this, answer the following : How many said that they didnot help?